Operations Completed at Mariner I-85 Well Offshore Canada

Canadian Superior Energy reported that all operations, including the permanent abandonment of the well bore, at the Canadian Superior El Paso "Mariner" I-85 well site have been completed and the Rowan Gorilla V jack-up drilling rig has been towed to Halifax. The Rowan Gorilla V rig, under tow, entered Halifax Harbour, Nova Scotia on Wednesday, March 24, 2004.

Mike Coolen, Canadian Superior's Vice President and Director, East Coast Operations commented, "Operations on the Canadian Superior El Paso 'Mariner' I-85 well have been performed in a very safe and effective manner. Zero Lost Time Injuries and zero Environment Incidents/Spills occurred while drilling this challenging High Temperature High Pressure 5408 m (17,743 feet) well, in the middle of the harsh North Atlantic, this past fall and winter. All involved are to be complimented on their attention to safety and the environment; and also to cost, schedule and budget. At the appropriate time, as soon as possible, we will comment further on the 'Mariner' project, including, if possible, Partner Confidential information. We are pleased to report that our expenditure tracking indicates that the well costs have met budget expectations, within normal industry tolerances; and we are confident that the overall well cost will be lower than those of comparable High Temperature High Pressure wells in the area, in part due to the favorable service contracts that were negotiated for the well.

"We are proud of the work accomplished by the Canadian Superior El Paso Well Construction Team, including the many local, national and international vendors that have assisted us with this first 'Mariner' Project well. At this time, we wish to acknowledge the hard work and outstanding contributions made by the management and staff of several of our major contractors; the Drilling contractor, Rowan Drilling Companies, Inc.; the prime Helicopter contractor, CHC Helicopters International and the Vessel contractors, Atlantic Towing Limited, Karlsen Shipping Company and Secunda Marine Services."

The "Mariner" I-85 well is one of the deepest wells that will be drilled offshore this year in North America. The exploration well location is approximately 290 kilometers (180 miles) southeast of Halifax, Nova Scotia. Three excellent prospects have been identified for drilling on the "Mariner" block (EL 2409) utilizing high-resolution seismic. The block encompasses a total area of 101,800 acres and directly offsets five significant discoveries near Sable Island including the ExxonMobil Venture natural gas field. The "Mariner" well is a High Temperature High Pressure (HTHP) well and was drilled and evaluated utilizing the latest in proven drilling technology.